The double-row tapered roller bearings are widely used in the hub of new energy vehicles, which contain outer ring with double raceway, double inner ring, multi-rollers, cage. In the paper, the bearing is regarded as the research object, and its three-dimensional model is established. Based on workbench platform of ANSYS, the FE model of double-row tapered roller bearing under radial force was established, and distribution law of strain and stress of parts of bearing under radial force was studied. Result shows that: equivalent stress and strain of tapered roller are significantly greater than that of cage, outer ring, and inner ring. The maximum equivalent stress values of tapered roller, inner ring, outer ring and cage are 933.09 MPa, 236.4 MPa, 130.31 MPa, and 142.87 MPa, respectively. And the maximum equivalent strain on tapered roller, cage, inner ring, outer ring is 0.0059, 0.0025, 0.0019, and 0.0008, respectively. Only the bottom roller and the three rollers closest to the bottom roller are under stress. This leads to large stress and strain on the bottom tapered roller, which is prone to early fatigue damage. With the increase of radial stress on bearing, equivalent stress and equivalent strain of bearing increase gradually.